Andy Johnston is in his 15th year with the Tiger football program and currently serves as associate athletic director for football operations. His responsibilities include managing the program's day-to-day operations. In his 14 years, Clemson has gone to 12 bowl games. Although this is his 15th year with the football program, he has been involved with the Clemson athletic department for 29 years. From 1983-97, he was the winningest women's tennis coach in school history.

In those 15 years, Johnston guided his squads to five consecutive ACC titles (1983-87), 12 top-25 finishes, and six NCAA Tournaments. He was ACC Coach-of-the-Year for the fourth time and Southeast Region Coach-of-the-Year for the second time in 1993. Seven players he coached at Clemson were named to the ACC 50-Year Anniversary team in 2002.

Johnston had a 254-160 Clemson record and 263-167 career mark. He was the coach at Furman in 1982 before coming to Clemson. His best season at Clemson was his rookie year when the team had a 30-5 record and finished #7 in the polls. That team won all nine flights of the ACC Tournament, the only tennis team in Tiger history to do that. He coached former Lady Tiger Gigi Fernandez, who was inducted into the Clemson Hall of Fame in 2005.

Johnston played for Clemson on the hardcourt and earned his degree in administrative management in 1979. He then served as the assistant men's tennis coach in 1980.

Johnston is a native of Summerville, SC. He is married to the former Sophie Woorons. He has a daughter, Kiera (21), and a son, Noah (4). A second daughter, Caylynn, passed away in 2008.